Outlook 98 installation problem -> system clock !?

[Kortex]

Hello,

I installed Outlook 97 (eveything went OK) and thereafter wanted to
upgrade to Outlook 98. The problem is, the installation process of Outlook
98 stops and asks to check the system clock. I uninstalled OL
completly, and tried to reinstall it, but I got the same message.

The system is Windows 2000, and the installation went right on 6 other
identical PC.

Has anybody encountered the same problem? Does anybody know how to solve
it?